aluminum structure
51Architecture and Civil Engineering — ▪ 2009 Introduction Architecture For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)). Beijing was the centre of the world of architecture… …
52organometallic compound — ▪ chemical compound Introduction any member of a class of substances containing at least one metal to carbon bond in which the carbon is part of an organic group. Organometallic compounds constitute a very large group of substances that have… …
53Formwork — Animation depicting construction of multi story building using aluminum handset formwork. Modular steel frame formwork for a foundation …
54metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …
55Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
56chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …
57chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
58Washington Monument — Infobox protected area name =Washington Monument iucn category = III caption = location = Washington, D.C., United States nearest city = lat degrees = 38 lat minutes = 53 lat seconds = 22 lat direction = N long degrees = 77 long minutes = 02 long …
59Maryland Route 32 — Route information …
60Metalloid —   13 14 15 16 17   2  B Boron …
